Finding the Fourth Proportional to 786,687,747.44, 1,085,689,182.84 and 434,331,604.40
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Solution
The fourth proportional to 786,687,747.44, 1,085,689,182.84 and 434,331,604.40 is: 599,410,790.62
Step by Step Solution
- Step 1: Write the proportion equation
786,687,747.44 : 1,085,689,182.84 = 434,331,604.40 : x - Step 2: Convert to fraction form
786,687,747.44/1,085,689,182.84 = 434,331,604.40/x - Step 3: Cross multiply
786,687,747.44x = 1,085,689,182.84 × 434,331,604.40 - Step 4: Simplify right side
786,687,747.44x = 471,549,124,662,622,080 - Step 5: Solve for x
x = 471,549,124,662,622,080/786,687,747.44 - Step 6: Final answer
x = 599,410,790.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.